发明名称 |
QAM receiver and method for constellations having at least sixteen symbols |
摘要 |
A QAM receiver for constellations having at least 16 symbols converts its received QAM signal into outputs including indications of the received symbols. A channel frequency response estimator responsive to outputs of the converter derives indications of estimates of effects of a link to the receiver on the phase and amplitude of the received signals. A processor responsive to outputs of the converter and the estimator (1) equalises the phases of the converter outputs, (2) scales the amplitude estimates by amounts determined by the amplitude associated with the separation of boundaries between symbols in the constellation, and (3) combines the phase equalised converter outputs and the scaled amplitude estimates to derive likely bit values of the received symbols.
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申请公布号 |
US7653153(B2) |
申请公布日期 |
2010.01.26 |
申请号 |
US20030440399 |
申请日期 |
2003.05.19 |
申请人 |
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
发明人 |
TOSATO FILIPPO;BISAGLIA PAOLA |
分类号 |
H04L27/06;H03M13/45;H04L25/02;H04L25/03;H04L25/06;H04L27/26 |
主分类号 |
H04L27/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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